Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Washington Zone 10, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
301-978 7 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
301-978 8 GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-978 9 GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-979 A GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-979 0 BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-979 1 BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-979 2 BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-979 3 BTVLMD127MD  5562 METROPCS, INC. 236      
301-979 4 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-979 5 BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-979 6 CHCHMDBE6MD  4716 PAETEC COMMUNICATIONS, INC. - MD 236      
301-979 7 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-979 8 BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-979 9 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-983 A BTHSMDBDDS0  9212 VERIZON MARYLAND, INC. 236      

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Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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